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This adaptor makes 135mm rear MTB axle compatible with any stationary fluid/wind trainer. - Stainless steel construction for durability. - Fits 135 x 12mm rear axle. - Compatible with 5mm Allen for easy installation.

- Replacement pads & holders w/ Velcro; for Specialized Carbon Aerobar or Specialized Hydroformed Alloy Aerobar

Specialized's C50 carbon extensions allow for a low aggressive aero position or a high-leverage position for climbing. Their 22.2mm outer diameter is compatible with many standard aftermarket aerobar clamps, and at 400mm long, they can be cut to fit your specific reach.

Specialized's S50 aluminum extensions allow for a low aggressive aero position or a high-leverage position for climbing. Their 22.2mm outer diameter is compatible with many standard aftermarket aerobar clamps, and at 400mm long, they can be cut to fit your specific reach.

Specialized's Alloy Ski-Tip Extensions are lightweight and ergonomic, perfect for optimizing your aero position. The 40-degree aluminum ski-tip extensions offer 10mm of lateral jog to fit a wide range of arm widths. The 22.2mm outer diameter is compatible with many standard aftermarket aerobar clamps, and at 400mm long, they can be cut to fit your specific reach.